Some aspects of ultra-relativistic heavy-ion collisions, complex forms of strangeness

The capabilities of the detectors STAR at RHIC and ALICE at LHC for measuring complex forms of strangeness, in the mid rapidity region, are examined as a function of the lifetime of these objects. The simulations are run on the basis of instrumental performances of these detectors as well as on recent theoretical speculations. Particular emphasis is put on the case of the H/sup 0/ (a 2u2d2s quark bag or alternately two coupled Lambda /sup 0/). (9 refs).